Type-writing machine.



PATENTED NOV. 19, 1907 B. G. STIGKNEY. TYPE WRITING MACHINE.

APPLICATION FILED APB..6,1903.

4 SHEETS-SHEET l MTNEI55EE= Y INV NTEIH 6. 4% fizm/ HE TTEJHNEY PATENTEDNOV. 19, 1907 B. G. STIOKNEY.

TYPE WRITING MACHINE.

APPLIOATION FILED APR.6,1903.

4 SHEETS-SHEET 3.

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g 7 way PATENTED NOV. l 9, 1907.

B. G. STIGKNEY. TYPE WRITING MACHINE.

APPLIOATION FILED APR.6,1903.

4 SHEBTSSHEET 4.

r l l I I I l l I l I l 1 l I I l l l l l l I 9 I l t Wwwasasasa UNITEDSTATES PATENT orrion BURNHnM o. STIGKNEY, or EL'IzABETinEwTERsEY,,tssienoa TO UNION TYPEWRITER' COMPANY, OF JERSEY CllY, NEWJERSEY, A. CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed April 6. 1903. serial No. 161,334.

To all whom it may concern:

Be it known that I, BURNHAM C. Srron- NEY, a citizen of the UnitedStates, and resident of Elizabeth, in the county of Union and State ofNew Jersey, have invented certain new'and useful Improvements inType-Writing Machines, of which the following is aspecilication.

u'lh'is invention relates to typewriting machines, and especially tothose of the front strike'variety, and its object is to simplify,cheapen and otherwise in'iprove the type-actio'nsl,

, My invention'consists in certain features of e which will behereinafter fully described and particularly pointed out in theconcluding claims.

In the drawings forming part of this s ecification, Figurel 1s a centrallongitu inal vertical section of a frontstrike writing machine made inaccordance with my improvements, the parts beingshown innormal position.Fig.2 IS a cross-section of the machine taken at about the line :r-1: ofFig. 1.

Fig. 3 is a view of a type-action when in ,wolking position, that is, atthe time the typelmpres'sion is made on the paper. 4 1s a diagramillustrating the convergence of Fig.

the rear portions of the key-levers.

In the several views, like signs denote like parts.

The framing-of the machine may comprise a base 1, corner-posts 2 and atoplate 3,

over whlch run the usual carriage am 4.

p platen T es 5 are mounted on radial type-bars -6, Wine 1 are pivotedupon a curved rod-7 and strike rearwardly against the laten. 'lhetype-bar hubs may work in radial slots 8 cut in a segment 9, in whichthe fulcrum rod 7 is mounted; said segment being prelerably guided bycars 10 upon a pair of fixed vertical guide rods 11, whereby the segmentThe type-bars at V maybe shifted vertically.

their forward ends may rest upon a segmental pad 12, carried upon theforward ends of rods 13 secured upon the'ty e-bar segment 9.

, In rear of the 'typears is mounted a sys tem of upstanding levers ofthe first order,

consisting of upwardly extending arms 14 and downwardly extending arms15, the latto! being preferably shorter than the former. These, leversare mounted upon a straight transverse fulcrum rod 16, which issupported upon a bar 17, the latter having vertical slots 18 for thelovers, and being fixed upon lugs 19 at opposite sides of the machinebase. At their upper ends these levers are connected by forwardlyextending links 20 to the type-bars. I 1

Substantially horizontal levers 21 extend forwardly beneath the t*pe-bars, said levers bearing at their forwar ends keys 22. its rear endeach lever is ramified, so that it forms a T, the 11 per cross-arm 23 ofthe lever being pivoted at 24 directly to the lower arm 15 of itsassociated up-standing sub-lever. The lower angular arms 25 of thelevers which preferably are materially longer than the arms 23, bearrearwardly at their tips at 26 against a transverse fulcrum-bar 27secured at its ends to the side walls of the base under said upstandingsub-levers. Guides for said arms 25, preferably in the form of a comb28, are secured to said bar.

' It will be seen that the finger key 22, the load point 24 and thefulcrum 26 of each key lever are located res ectively at the apices of atriangle, the sid stantial angles with each other, so that an actuationof a'key lever will produce a movement of the connection 24 to the typebar that is fore and aft of the machine.

The rear end of the lever is wholly supported by the endent arm 25 ofthe upstanding subever, whereby downward movement of this end of thekey-lever is revented. Ilence at the depression of a cey 22, there isproduced a tendency upon the part of the entire key-lever to vibratedown parts may be returned by the action of any.

suitable returning spring, that herein illus trated. being In the formof a diagonal drawes of which form subspring 29, caught at one end in aprolongation 30 of the link 20 past its point of connection with thelever arm 14. The spring is caught at the other end in said arm 14.During the printing movement of the typeaction, said spring is expandedandits contraction serves to return the parts to normal position.

Referring to Fig. 2, it .will be seen that the ty e-bars lie in an arc,and that the horizonta links 20 are correspondingly disposedatprogressively increasing heights at the sides of the machine. Iaccordingly make the upper arms 14 of the up-standing levers shortestinthe middle of the system, and make them progressively longer from themiddle to the sides of the system. The short arms 15 of said levers Iincrease in length in like manner; While the forwardly extendingcross-arms 23 of the key-levers I make onger in the middle andprogressively shorter towards the sides of the system, so as to matchthe increasing length of the arms 15 to Which they are pivoted. The

parts may all be proportioned so that a sub stantially uniform leverageupon the type= bars IS preserved for all of the keys, so as to give thelatter substantially uniform dips. It'will also be observed that thesystem of links is of substantially the same width as the system oftype-bars, and that the system of up-standing levers is of substantiallythe width of the link system. The sub-levers may be'parallel, and maystand vertically at Fig. 2, and the system of key-levers (which at thekeyboard is wider than the system ol" sub-levers) may narrow or convergeat its rear end, as illustrated at Fig. 4, to equal the width of thesystem or sub-levers.

Variations may be resorted to within the scope of my invention, andportions of my Improvements may be used without others. \(Vhat I claimasnew and desire 'to secure by Letters Patent, is:- 1. In a front strikewriting machine, the combination of a series of rcarwardly strikingtype-hars,-a series of lip-standing levers connected thereto, a seriesof key-bearing forwardly extcnding levers pivoted at their rear ends tosaid tip-standing levers, angular arms on the rear ends of saidkey-levers, and

bearingsfor the ends ol said arms, the arms being disconnected from butadapted to press against said bearings.

.2. in a front. strike \\'riting machine, the

combination of a series ol" rcarwardly strik-' ing type-bars, a seriesof key-bearing levers extenr mg forwardly bcncath the type-bars and eachhaving ranntied arms at its rear end, connections between one set. ofarms' and the type-bars and by meansol' which the key levers receivetheir support at their rear ends, and bearings for the other set ofarms.

3. In a front strike writing machine, the combination of a series ofrearwardly striking type-bars, a series of up-standing levers in rear ofthe type-bars, a series of levers each having ramrlied arms at its realend, one set of arms being pivoted directly upon the ends of saidtip-standing levers, the other set of arms being free, and bearings forthe free set ol arms.

4. In a front strike writing machine, the combination of a series ofrearwardly striking type-bars, a series of rip-standing levers of thefirst order mounted in rear of said typ e bars, links connecting saidlovers to said type-bars, key=bearing levers 'xtcnding forwardly beneaththe type-bars and having attheir rear ends 'tl wardly extending armswhich are pivoted directly to the lower arms of said up-standing levers,downwardly extending arms upon said key-levers, and a transverse fulcrumbar for said downwardly extending arms.

5. Ida front strike writing machine, the combination of a scries ofrcarwardly striking type-bars, a series of tip-standing levers in rearof said type-bars, each of said levers being fulcrumed,between its ends,links connecting said levers and said t pe-bars, and forwardly extendingkcy-lcvers connected to'the lowcr'arms of said up-standing levers, themovement of the points of connection be tween the key levers'and thelower arms of the upstanding levers being fore and aft of the machine.

6. In a front strike writing machine, the

combination of a series of rcarwardly strik' ing tyr e-hars, a series oiup-standir levers in rear of said type-bars, each ol' said levers beingl'ulcrumcd between its ends, links connecting said levers and said tyit'e-bars, forwardly extending T-shaycd key-levers pivoted at one set oftheir cross-arms to the pendent arms of said tip-standing levers, atransverse bar t'i-rming a fulcrum for the other set of cross-arms, andguides tor the latter set of cross-arms.

7. In a front strike writing machine, the.

combination of a series cl" rearwardly striking type-bars, a series ofT-shapcd key-levcrs, lulcrums from which the key levers are disconncctcdbut against which ore sci oi cross-arms on said levers bear,amlconneclions bctwcenthc other set of cross-arms and said type-bars.

S. In a l'ront strike writing machine, the combinzuion of a series ofrearwardly striking i \'pc-bal's, a series of T-shapcd key-levers,lulcrums l'rom which the key levers are disconnected but againstwhichone set oi" cross-arms on said lcvcrs bear, and connections between theother set of cross-arms and said type-bars; said connections including aset ol sub-levers which are connected to the key levers and support therear ends thereof.

9.111 a lront strike writing machine, the combinatnm of a series olrearwardly striksaid levers, and connections between the 'other -set ofcross-arms and said type-bars;

said connections including both a set of sublevers of the first order tothe lower arms of which the key levers are connected, and a set of linksconnecting said sub-levers directly to the type-bars. I

I. 10. In a front strike writing machine, the combination of a series ofre'arwardly striking type-bars, a series of tip-standing levers of thefirst order mounted in rear of said type-bars, links connecting saidlevers to said type-bars, kev-bearing levers extending forwardly beneaththe typebars andhavin'g at their rear ends upwardly extending arms whichare pivoted directly to the lower arms ofvsaid up-standing levers,downwardly extending arms upon said key-levers, and atransverse fulcrumbar for said downwardly extending arms; said system of u -standinglevers being less in width than said system of key-levers at thekeyboard, and said keylevers converging at their rear portions.

.11. In a front strike writing machine, the combination of a series ofrearwardly striking type-bars, a series of up-standingllevers of thefirst order mounted in rear of said type-bars, links connecting saidlevers to .saidtype bars, key-hearing levers extending forwardly beneaththe type-bars and having attheir rear ends-upwardly extending arms whichare pivoted directly to the lower arms of'said tip-standing levers,downwardly extending arms upon said key-levers, and a transverse fulcrumbar for said downwardly extending arms; said tip-standing levers beingpivoted upon .a single transverse lulcrunr rod, their upwardly extendingarms being shortestat the middle ofthc system and of progressivelyincreasing length from the middle to the sides of the system, and theirdownwardly extending arms being of correspondingly increasing lengths.

12. In a front strike wriiing machine, the combination of a seriesolrearwardlystriking t pe-bars, a series of tip-standing levers. of t 1efirst order mounted in rear of said typehars, links conriectipg saidlovers to said type-bars, key-bearing levers exteni-ling'forwardlybeneath the type-bars and having at their rear ends upwardly extendingarms which are pivoted directly to the lower arms 1 of saidnp-standinglevers, downwardly extending arms upon said key-levers, and atransverse l ulcrum bar tor said downwardly extending arm s;'isaidtip-standing lev rs la in'g pivoted upon asingle lulcrum rod, theirupwardly extei'iding arms being shortest "at the Iniddleol the systen'iand ol prcgressivelv increasing lengths l'rom the middle to the sides ofthe system, their downwardly ivtending arms being ol correspontlinglyincreasing lengths, and the upwardly extend ing cross-arms on thekey-levers being longest at the middle of the system and ofprogressively decreasing lengths from the middle to the sides of thesystem,

13. In a typewriting machine, the combination with a series of earwardlystriking tvpe-barswf a series of up-standing levers of the first orderconnected to said type-bars; said levers being fulcrumed in a transversehorizontal line, their upwardl extending arms being shortest in the midde of the system and of progressively increasing lengths from the middleto the sides of the s stem, their downwardly extending arms eing ofcorrespondinglyincreasing lengths but shorter than the upwardlyextending arms; and a system of key-bearing levers connected to saidtip-standing levers. I

14. In a front strike writing machine, the com bination of a series ofrearwardly striking type-bars, a series of up-standing levers of thefirst order mounted, in rear of'said typebars, links connecting saidlevers to said type-bars, kin-bearing levers extending forwardly beneaththe type-bars and having at their rear ends upwardly extending armswhich are. pivoted directly to the lower arms of said tip-standinglevers,downwardly ex-- tending arms upon saidkey-levers. a transverse1ulcrum bar -l'or-sai d downwardly extending arms: and' a system ofreturning.

springs con net-ted to said up-standing levers.

15. In', a front strike writing machine. the comb nation of a series oirearwardly striking type-bars, a series ol.upstandln-g lovers of 'thefirst order mounted in rear of said typebars', links connecting saidleversto said type- ;liars, key bearing levers extending forwardlybeneath the type-bars and having attheir -rear-em ls upwardly extendingarms which are 105. pivoted directly tollle lowerarms of said upstandinglevers, downwardly extendii'ig arms upon said 'kcy leveis beneath saidupwardlyextending arms, a transverse t'ulerlnn bar for said dmvnwardlvextending. arms, said links'being prolonged beyond the points ofconnections to said tip-standing levers, and springs hxlen'dingdiagonally from the rear ends of said linksto theupper-arms of saidtip-standing lovers, for returning the typc- 1'15 actions to normalposition.

to. In a typewrlting machine, the combi-- nation of a system oltype-bars, a. system of keys, and connections between said keys and'said type-liars; said connections including a "-s \'sl ln nl" links anda system ollovers to which said links are pivoted; said links beingprolonged br-iyoiid their points ol'ronnections it b said levers,- andsprings extending from saidlink prolongations to said levers, for. re-

turning the t a --actions to normal positioni I7. ln a typewritingmachine, the c0ml ination of a series of types a series ol typooperatingarms, a series of T-shaped levers pivoted at one set of their cross-armsto and supported at their rear ends by said type-opcrating arms,bearings for the other set of "lOss-ttl'lllS, and a series ol" keys.

18. In a typewritine machine, the combination ol :1 series of type-bars,a series of keybearing T-shaped levers, a series of sub-levers of thefirst' order to which said key-levers are pivoted at one set of theircross-arms, bearings for the other set of cross-arms, and a series ofreturning springs.

19. In a typewritine,- machine, the comhination of a series oftype-bars, a series of keybearing' T-shapod levers, a series ofsub-levers ol the lirst order to which said keylevers are pivoted at oneset ol" their crossar1ns, bearings for the other set ol' cross-arms, anda series ol' returning spring-s, said bearing arms being -mat riallylonger than said pivoted arms.

20. In a front strike typewriting' machine, the combination ofrearwardly striking type bars. operating links therefor, upstanding levers ol the first order, and key levers; the links being connected tothe upwardly projeeting arms of the upstanding levers, and the keylevers being" pivoted directly to and supported by the. downwardlyprojecting arms ol the upstanding levers.

21. In a front strike typewritmg m achine, the combination of rearwardlystriking type bars, upstanding levers ol' the first order connected tosaid type bars, key levers pivoted directly to and supported by thedownwardly projecting arms of said upstanding key levers, and fulcruinsfor said key levers arranged under said u standing levers.

22. In a front-stri (e typewriting machine, the combination of a seriesof upwardly and rearwardly striking type bars, a series of up rightsulylevers ot the first order operatively cmineeted to said type bars,key levers directly connected to and supported by said sub-levers, and afulcrum against whiclfthe key lever exerts a rearward ressure.

23. In a typewriting mac tine, the combination of a series of type bars,a series of key levers each having an upwardly extending arm and adownwardly projecting arm, a fulcrum for the downwardly projecting arm,a sub-lever directly connected to said upwardly extending arm, and bymeans of which the key lever is supported, andconnections between saidsub-lever and the type bar.

24. In a typewriting machine, the combination of a type bar, a subleverconnected with said type bar, a key lever having three arms, one armhearing a key, 0ne arm cooperating with a fulcrum on which the key leverturns and the third arm being directly con: nected to said sub-lever andby means of which the key lever is supported.

Signed at the borough of Manhattan, city of New York, in the county ofNew York, and State of New York, this 28th day 'ot'- March A. D. 1903.

- BUR-NI-IAM C. STIUKNEY.

Witnesses:

K. V..DoNovAN, E. M. VVELLS.

